If I were you my friend I would go and try one .I have seen some good size men playing them.Good luck.Bill................
I don't know if this is going to be any help to you but I hope so.
I recently had exactly the same issue after suffering an acute injury to my left wrist which I am sure was augmented by my age too.
As I play a 12 string guitar for a living, after recovering and performing a few shows, I soon realised I HAD to find a more comfortable instrument given that (as you quite rightly say) 12 string acoustics are generally much heavier going.
I decided,the only answer would be an electric 12 string and try and get that as close to an acoustic sound as possible (with the emphasis on "as close as possible"). After trying several semi hollowbody's, I bit the bullet and bought a Gibson 335/12. The neck feels super slim and combined with the much lighter strings it is truly a joy to play. I have now completed many nights playing without any pain or discomfort and this guitar is now my "go to" weapon of choice.
The biggest issue was the sound (tone) and after much experimentation and heartache, I have now found "my tone" (of course, sound is very subjective) that I think is as close to acoustic as possible and I also have the bonus of being able to pull out that lovely "jangly" Byrds / Beatles sound when required !
I DI the guitar directly into the PA through a Fishman "Pro Platinum" DI/EQ (voiced for acoustic guitar), and have the neck pickup (split coil) set to humbucker with volume & tone pots set around 8-10. The bridge pickup I have set to single coil with the volume & tone pots around the same, but of course I adjust these on the fly as required.
I realise the Gibson 335/12 is a very costly instrument but there are other options. The Ibanez (sorry can't remember the model No.) is absolutely excellent.
Well Arthur, that's about it; all I would say is, I was VERY dubious about going down the electric route, but now I've got it sorted, it's the best thing I could have done so all I would say is, give it a try!
As I said, I hope this helps as I can sympathise totally with your predicament.
Arthur, I don't know a lot about Taylor's lineup overall but I've spend some time with the Baby models and a couple of the other lower end models. I just looked it up and the nut width is the same on the baby's and your guitar and I don't think there is much if any difference in the profile or the thickness. I've never noticed any difference between them but then I think Taylor makes good guitars but I'm not too crazy about the feel of the neck on any of them that I've played.
Is the issue the size of the neck or the string tension? If it's the tension, have you tried tuning down 1/2 step to see how it feels?
If it's the size of the neck, you might think about a Tenor. Only four string but the neck is narrower.
Update: I just finally bought one!
I got a real nice new GS Mini mahogany from Sweetwater.
The Taylor Big Baby, that I own, has a full scale neck. If you have longa hands it is
more comfortable. I had a Taylr Mini, it sounded good, but its 23.5 inches scale was too small for me.
I do not have long hands.